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ndbm.h
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/* ndbm.h - The include file for ndbm users. */ /* This file is part of GDBM, the GNU data base manager, by Philip A. Nelson. Copyright (C) 1990-2011, 2017-2018 Free Software Foundation, Inc. GDBM is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GDBM is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GDBM. If not, see <http://www.gnu.org/licenses/>. You may contact the author by: e-mail: phil@cs.wwu.edu us-mail: Philip A. Nelson Computer Science Department Western Washington University Bellingham, WA 98226 *************************************************************************/ #include <gdbm.h> /* Parameters to dbm_store for simple insertion or replacement. */ #define DBM_INSERT GDBM_INSERT #define DBM_REPLACE GDBM_REPLACE /* The file information header. */ typedef struct { GDBM_FILE file; /* Actual gdbm file (held in the .pag file */ int dirfd; /* Descriptor of the .dir file */ datum _dbm_memory; /* Keeps the last returned key */ char *_dbm_fetch_val; /* Keeps the dptr of the last fetched datum */ gdbm_error _dbm_errno; /* Error code from the last failed call */ } DBM; /* Used internally by the library */ #define __gdbm_error_to_ndbm(dbm) \ do \ { \ if (gdbm_errno && gdbm_errno != GDBM_ITEM_NOT_FOUND) \ (dbm)->_dbm_errno = gdbm_errno; \ } \ while (0) /* These are the routines */ extern DBM *dbm_open (char *file, int flags, int mode); extern void dbm_close (DBM *dbf); extern datum dbm_fetch (DBM *dbf, datum key); extern int dbm_store (DBM *dbf, datum key, datum content, int flags); extern int dbm_delete (DBM *dbf, datum key); extern datum dbm_firstkey (DBM *dbf); extern datum dbm_nextkey (DBM *dbf); extern int dbm_error (DBM *dbf); extern void dbm_clearerr (DBM *dbf); extern int dbm_dirfno (DBM *dbf); extern int dbm_pagfno (DBM *dbf); extern int dbm_rdonly (DBM *dbf);